Czech Dental Journal, 2020 (vol. 120), issue 3

Editorial

Jan Veverka

Čes. stomatol. Prakt. zub. lék. (Czech Dental Journal) 2020; 120(3): 65  

EFFECT OF LOW, MEDIUM AND HIGH MOLECULAR WEIGHT HYALURONIC ACID ON HUMAN DENTAL PULP STEM CELLS

J. Schmidt, N. Pilbauerová, T. Soukup, J. Suchánek

Čes. stomatol. Prakt. zub. lék. (Czech Dental Journal) 2020; 120(3): 67-77 | DOI: 10.51479/cspzl.2020.018  

Introduction: Dental pulp stem cells (DPSCs) express naturally high positivity for surface receptor glycoprotein CD 44 which is involved in the induction of odontoblast mineralization with hyaluronic acid (HA) being its major ligand. The aim of this experiment was to assess the effect of HA in low (LMW-HA), medium (MMW-HA) and high (HMW-HA) molecular weights on the phenotypic profile, proliferation activity and differentiation potential of human DPSCs. Methods: The experiment was conducted in vitro on two lines of human DPSCs from different donors (third molar - male, 25 years and first premolar - male, 9 years). These lines were...

THE MARGINAL AND INTERNAL FIT OF COCR ALLOY SINGLE CROWNS WITH PREPARATION DESIGNS INCLUDING AUXILIARY FEATURES; CAD/CAM VERSUS CONVENTIONAL TECHNIQUE

K. Walczak, D. Friedrichs, H. Meissner, K. Boening

Čes. stomatol. Prakt. zub. lék. (Czech Dental Journal) 2020; 120(3): 78-87 | DOI: 10.51479/cspzl.2020.019  

Objectives: Evaluation of the influence of complex tooth preparation designs with incorporated auxiliary features on the marginal and internal fit of computer-aided design (CAD), and either additive (SLM) or subtractive (milling) computer-aided manufactured (CAM) and conventionally cast CoCr alloy single crowns (SC). Material and methods: Artificial teeth were prepared with four different preparation designs: chamfer standard preparation (SP, as control), chamfer preparation with occlusal isthmus (OP), chamfer preparation with proximal boxes (BP) and chamfer preparation with buccal/lingual grooves (GP). Five crowns were made from...

UNICONE PLUS VS. UNICONE - IN VITRO CYCLIC FATIGUE STUDY AT DIFFERENT ENVIROMENTAL TEMPERATURES

A. Jusku, P. Jirásek, A. Petřivalská, M. Rosa, J. Staněk, Ľ. Harvan

Čes. stomatol. Prakt. zub. lék. (Czech Dental Journal) 2020; 120(3): 88-93 | DOI: 10.51479/cspzl.2020.020  

Introduction, aim: The issue of fracture of endodontic nickel-titanium instruments is quite extensive. It is an alloy that has the ability to change its internal structure. A great deal of effort is devoted to the development of an alloy with ideal properties. Instruments fracture occurs for two basic reasons. The first one is exceeding the limit of resistence of the instrument to cyclic fatigue and the other one is exceeding the limit of torsional load of the instrument. Most authors agree, that the main factor influencing instruments fracture is exceeding the limit of cyclic fatigue. The aim of this study was to evaluate the resistence to...

VZPOMÍNKA NA PROFESORA EDUARDA NESSELA

O. Brázda

Čes. stomatol. Prakt. zub. lék. (Czech Dental Journal) 2020; 120(3): 94-96  

STO LET OD ÚMRTÍ EDUARDA NESSELA

redakce

Čes. stomatol. Prakt. zub. lék. (Czech Dental Journal) 2020; 120(3): 66